Excellent Cosmetic Ingredient SCCS/CIR Reviewed

Hyaluronic Acid

INCI: HYALURONIC ACID

CAS Number
9004-61-9
Function
Skin conditioning agent, humectant
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no CFR restriction; also used as inactive ingredient in FDA-approved drugs at up to 0.01% topical

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Safety Opinions

Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).

cir
Verdict: unknown
NOAEL: 60 mg/kg (not specified)
cir
Verdict: unknown
NOAEL: 50 mg/kg (not specified)

Expert Verdict

Animal-sourced HA (rooster comb) must be free of pathogenic viruses, infectious agents, and biologically-derived impurities. Bacterial fermentation-derived HA is nearly endotoxin-free. No genotoxicity, no reproductive toxicity, acute oral LD50 >1200 mg/kg in mice.

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Concern Level: Low

Frequently Asked Questions

Is Hyaluronic Acid safe in cosmetics?

Animal-sourced HA (rooster comb) must be free of pathogenic viruses, infectious agents, and biologically-derived impurities. Bacterial fermentation-derived HA is nearly endotoxin-free. No genotoxicity, no reproductive toxicity, acute oral LD50 >1200 mg/kg in mice. The EU classifies Hyaluronic Acid as "permitted". Safety rating: EXCELLENT. This ingredient has been reviewed by cir.

Is Hyaluronic Acid allowed in the EU?

Hyaluronic Acid EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Hyaluronic Acid do in cosmetics?

Hyaluronic Acid functions as: Skin conditioning agent, humectant. It is classified as a cosmetic ingredient in our database. CAS number: 9004-61-9.

What is the Margin of Safety for Hyaluronic Acid?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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